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Precautions for New Refrigerant (R410A)
Si39-303
222
Precautions for New Refrigerant (R410A)
1.
Precautions for New Refrigerant (R410A)
1.1
Outline
1.1.1 About Refrigerant R410A
!
Characteristics of new refrigerant, R410A
1. Performance
Almost the same performance as R22 and R407C
2. Pressure
Working pressure is approx. 1.4 times more than R22 and R407C.
3. Refrigerant composition
Few problems in composition control, since it is a Quasi-azeotropic mixture refrigerant.
★
1. Non-azeotropic mixture refrigerant: mixture of two or more refrigerants having different
boiling points.
★
2. Quasi-azeotropic mixture refrigerant: mixture of two or more refrigerants having similar
boiling points.
★
3. The design pressure is different at each product. Please refer to the installation manual for
each product.
(Reference) 1 MPa
10.19716 kgf / cm
2
HFC units (Units using new refrigerants)
HCFC units
Refrigerant name
R407C
R410AR22
Composing
substances
Non-azeotropic mixture
of HFC32, HFC125 and
HFC134a (*1)
Quasi-azeotropic mixture
of HFC32 and JFC125
(*1)
Single-component
refrigerant
Design pressure
3.2 MPa (gauge pressure)
= 32.6 kgf/cm
2
3.80 MPa
(gauge
pressure)
= 38.7 kgf/cm
2
2.75MPa
(gauge pressure)
= 28.0 kgf/cm
2
Refrigerant oil
Synthetic oil (Ether)
Mineral oil (Suniso)
Ozone destruction
factor (ODP)
0
0
0.05
Combustibility
None
None
None
Toxicity
None
None
None
Pressure-Enthalpy curves of HFC-32/125 (50/50wt%)
Summary of Contents for VRV II Series
Page 6: ...Si39 303 iv Table of Contents...
Page 31: ...Si39 303 Installation General Information 25 Flaring Procedure...
Page 124: ...Appendix Si39 303 118 General Information 3P114237A...
Page 141: ...Si39 303 Appendix General Information 135 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 4D040338A...
Page 142: ...Appendix Si39 303 136 General Information RXYQ14MY1B RXYQ16MY1B 4D040339A...
Page 144: ...Appendix Si39 303 138 General Information 7 11 Wiring Diagrams 7 11 1 Outdoor Unit RXYQ5MY1B...
Page 145: ...Si39 303 Appendix General Information 139 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 3D038582...
Page 146: ...Appendix Si39 303 140 General Information RXYQ14MY1B RXYQ16MY1B 3D038058...
Page 147: ...Si39 303 Appendix General Information 141 7 11 2 Field Wiring RXYQ5 16MY1B 3D040746...
Page 148: ...Appendix Si39 303 142 General Information RXYQ18 32MY1B 3D040747...
Page 149: ...Si39 303 Appendix General Information 143 RXYQ34 48MY1B 3D040748...
Page 158: ...Appendix Si39 303 152 General Information...
Page 180: ...Refrigerant Piping Si39 303 174 Installation Manual...
Page 226: ...Troubleshooting Si39 303 220 Operation Manual...